Roger s



ROGER S. LITTLEFIELD, OF EMPIRE OITY,-OREGON.

METHOD OF BUILDING JETTIES.

SPECIFICATION forming part of Letters Patent No. 324,857, dated August 25, 1885. Application filed D. eember 26, 1884. (No model.)

To all whom may concern.-

Be it known that I, ROGER S. LITTLEFIELD, a citizen of the United States, residing at Empire City, in the county of Coos and State of Oregon, have invented certain new and useful Improvements in Method of Building Jetties or Breakwaters, of which the following is a description.

My invention relates to a new method of building or constructing jetties or breakwaters; and it consists in the following steps of construction: first, starting a track at the point where the jetty is to begin, upon which dumpingcars and a pile-driver may be run; second, dumping the material or filling until the rise reaches a required level above or below water-surface; third, driving piles into the slope of the dump on which the track may be extended.

Hitherto in the building ofjetties great eX- pense has been incurred by the use of very long piles. The piles have been driven into the sea-bottom from a scow, a track then laid method obviates these delays, inasmuch as the filling and the piles are placed at practically the same time, one thus supporting the other. My method also requires short piles, as they are driven into the slope of the forward end off before it will pull or give under a strain, and

a pile driven into the dump or end of ajetty made of loose stone, or same intermixed with mattress-work, will be properly supported to fulfill this requisite.

In the drawings Figure 1 represents a longitudinal section of a jetty in course of construction, with a dumping-car filling in around the piles. Fig. 2 is the same with a piledriver at work in the place of the car.

A represents the jetty, into the forward end or dump a of which are driven piles B by means of any pile-driver, as C. After a suffieient number of piles have been driven the track on the top of the jetty is extended upon them and the dumpingcar D run on to fill in around them.

I claim- The herein-described method of constructing breakwaters and jetties, which eonsistsin beginning a fill at the point where the jetty is to be constructed, driving piles into the slope of said fill, extending a track on the piles, then filling about said piles, and so continuing in order until the jetty is completed.

ROGER S. LITTLEFIELD.

Witnesses:

J AY 0. SHORT, Time. 0. PORTER. 

